/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { ts } from "qvog-dsl";
import {
  CallExpression,
  native,
  HomeCheckHint,
} from "qvog-dsl";

const SEVERITY = 2;
const DOC_PATH = "";
const DESCRIPTION =
  "When the third parameter KeyGenerator of ForEach uses the default key generation rule (index + '__' + JSON.stringify(item)), inserting a new array item triggers component recreation for all subsequent items, leading to poor performance with large datasets or complex components due to lack of component reuse.";

function call2Ident(
  callExpression: ts.CallExpression | undefined
): ts.Identifier | undefined {
  if (callExpression !== undefined) {
    let sig = callExpression.expression;
    if (sig.kind === ts.SyntaxKind.Identifier) {
      return sig as ts.Identifier;
    }
  }
  return undefined;
}

export default native<HomeCheckHint>()()
  .match(CallExpression)
  .when((node: ts.CallExpression): boolean => {
    let callExpression = node;
    let iden = call2Ident(callExpression);
    let flag = false;
    if (iden) {
      if (iden.escapedText === "ForEach") {
        let args = callExpression.arguments;
        if (args.length < 3) {
          flag = true;
        }
        if (args.length === 3 && args[2].kind === ts.SyntaxKind.NullKeyword) {
          flag = true;
        }
      }
    }
    return flag;
  })
  .report({
    severity: SEVERITY,
    description: DESCRIPTION,
    docPath: DOC_PATH,
  });
